Safety device for electrically-heated implements.



H. A. HILLS. SAPETY,DEVIUE FOB ELEGTRIGALLY BEATQDIMPLEMENTS.

APPLICATION FILED BOY. 9, 1908.

1,008,411. Patentedmv.14,1911. 17 1%;1.

-UNITED sTATEs PATENT carica.

HENRY A. HILLS, OEl GRAND RAPIDS, MICHIGAN.

SAFETY DEVICE ron ELEcTRIcALLY-HEATED IMPLEMENTS.

Speciication of Letters Patent.

Application led November 9', 1908. Serial No. 461,613.

the kmd described whereby the electric circuit is 'interrupted when the implement heated by the circuit reaches a predeter-` mined temperature.

To this end my invention consists in the novel construction, arrangement and combination of\'parts herein shown and described and more particularly pointed out in the claims, In the accompanying drawings wherein like or similar reference characters indicate like or corresponding parts; Figure 1, is a longitudinal section taken substantiallynon line 1"#-1 of Fig. 2 showing one form of my improvement applied to an electrically heated flat iron. Fig. 2; isa section taken substantially on line 2--2 cf Fig. -1, with the fiat ironl shown in elevation. Fig. 3, is a sectional elevation of m device applied to a stand or holder for a4 at iron.

In the preferred 'form shown in the drawings, 1 isa'vat 1ron`e iiipped in substan` tially the usual manner or heating the same by means of an electric current.

2 and 3 are binding posts forattaching the conductors to the element, all'4 formed' and arranged in the usual or any preferred mannen4 A fuse block 4,- preferably formed of porcelain or other refractory non-conducting material is attached to the element 1 by suitablescrews or bolts 5-5 or other convenient means for holding the same securely in' osition upon the elemen't.

n the preferred form shown the block 4 is provided with. a recess 6, opning toward the wall of the element to which it is at A, HILLS,I Qf

i extendin -tached. Suitable binding posts 7--7 are provided for attaching the electric conductors to the block. As shown the binding` posts 7 are each provided with a siem 8, through the outer 4wall of the block. ach'of the stems 8 is provided with a clamp l0 or other suitable means posi# "tioned within the recess 6 forI engaging a fusible connection 9 to electrically connect the binding posts 7-7. The several parts `are refcrably so formed that .a port ion of the usible connection 9 is brought into close proximity with the wall of the element 1 so `that when the temperature of the element reaches a certain predetermined limit a or tion of the fusible member will be me ted,

1' thus breaking the electric circuit to the ele-` ment.

Any suitable means may be4 provided .to

insure the above described operation.

the form shown the stems 8-8are posi- Patented Nov. 14; 1911.

tioned at the opposite ends of the clamber 6` and are each. rovided with a spring clamp 1() within t e chamber arranged to engage the lextremity of the fusible member.

A bridge or wall 11. is positioned, trains-l versely-of thel chamber betweenthe clamps so that the central portion of a fuse en.

gaged in the clamps Awill be'held by the wall 11 close to the element. If desired suitable y be provi-:led at opposite sides of the wal n 11, asshown to .hold the fuse snugly a ainst the outer face of the'wall and`contro its position in thel chamber.. An opening 14 may be provided in case the fuseis melted the melted metal may freelyescape from the chamber` Inoperation one of the bindingposts 7 is connected by means of a conductor` 15 to one of the binding posts aslthe ost 'upon the element, the opposite bin ing post `'f and the binding post 2 upon the elem ant are' connected res ectively. to the conductors 16 and 17 suita ly .arranged to connect the element to the source of' electric energy.

` When thus arranged it is evident that 1n case the fusible member 9.s melted' tie connection between the conductors 16 `ind 15 will lbe broken thus breaking the electric V100 in the lower wall A of the fuse-block no that circuit to the ,element and eifectually preventing any ovrheating of the same.

In the form hown in Fig. 3, my im rovement is attached to a stand or hol er 18 adapted to receive and su port the element when not in use. In this orm my improvement is so positioned that when the element is placed upon the stand a part of the fusible member 19 between the clamps 10--10 will be brought in close proximity to-a face of the element substantially as above described. The general operationx and construction being lalso substantially the same as herein before set forth. I {aving thus described my improvement, it is obvious that various immaterial modi- -fications may b'e made in my device without departingv from the spirit of my invent-ion, hence I do not wish to be understood as limiting myself to the exact form of construction shown.

What I claim as new and desire to secure by Letters Patent is 1. A device of the kind described, comprising an insulating block rovided with means for attachin electric conductors thereto and means or securing a fusible member between said conductors, in combination with means adapted to engage the central portion of said fusible member to Ahold the same in a fixed position.

2. lA device of the kind described, vcomprising an' insulating block provided with means for attaching electric conductors thereto, and means for securing a fusible member between'said-conductors, in combia recess in vits face an -nation with 'means upon said block adapted to a portion of. said fusible member.

4. vA- device ofthe kind described comprising an 'insulating1 block provided with engaging means posiv tioned in said recess 4near the ends 'thereof '.pris'ing an insulatingv for connecting 1a fusible memberin an electric circuit, in combination withmeans ar-4 ranged in said recess adapted-to position a 'portion of said fusible member inV close plroxl'imity -to the 'face -of -said insulating 5, A` device ofthe described', comblock provided with a recessinits face a engaging means positioned near the ends 'of sai recess adapted to connect 4a Afusible member --in an electric circuit, in vcombination 'with V11mm extend,

ing transversely of said recess adapted to support a portion of said fusible member in close proximity to the face of said block.

6. A device of the kind described, comprisingan insulating block provided with a recess in its face and engaging means positioned in said recess near the ends thereof adapted to connect a fusible member in an electric circuit, in combination with supporting means extending transversely of said recess adapted, to position a portion of said member in close proximity to the face of said block and means positioned at opposite sides of said supporting means arranged to space the remaining portion of said fusible member from the-face of said block. 7 A device of the kind described, comprising an insulating block provided with a recess in its face and engaging means positioned in said recess near the ends thereof adapted to connect a fusible member in an electric circuit, in combination with means formed integrally with said block extending transversely of said' recess adapted to position a portion of said fusible member in close proximity to thel face of said block.

8. A device of the kind described, comprising an insulating block provided with a recessin the face and engaging means positioned in said recess near the ends thereof adapted to connect a fusible ymember in an electric circuit, incombination with means arranged in said recess to position a portion of said fusible member in close proximity .to the face of said insulating block and means for securing said block in position and thereby control the distance between said fusible member and an element heated by the electric circuit passing through said fusible member. l v

9. A device of the kind described, comprising an insulating block provided with a recess in its face, and engaging means posi-- tioned in said recess near the ends thereof adapted to connect a fusible member in an electric circuit, in combination with means arranged in said recess adapted to position a portion of said member in close proximity 10.' A device of the kind described, coin-v `prising an insulating block provided with means for -attachin lectric conductors theretoan'd means or securing afusible member between said conductors,- incombination withA lmeans formed .integral with said block adapted to engage the central portion of said 'fusible member to hold the sameyin a fixed position.

.to the face of said block, astand ladapted to 11. A movable element, means for heating said element, and a stand 'for tem- 1,ooav,411 n y y et porarily support saidgelement, in combisi ed my name in the presence of\ two (2)V naton Width@J lflusib e `member rounbtgupo su scribng witnesses.

sai sta'n wit a art arrange to este Y by said element w en the same isupon said r A', HILLS" stand5, and ada ted to prevent the over- Witnesses:

heating of the e ement. GEORGE D; BABDEN,

In testimony whereof, I have hereunto WILLIAM C. SIMMONS. 

